en.Wedoany.com Reported - The tunnel excavation for the Comillas to Madrid Río section of the Madrid Metro Line 11 extension was completed yesterday.

This section of the tunnel was excavated by TBM Mayrit, a Herrenknecht earth pressure balance shield machine with a diameter of 9.4 meters, which broke through at the future Madrid Río station after 75 days. The tunnel boring machine was operated by a joint venture consisting of Acciona, Dragados, and Rover, with a tunneling length of 1.114 kilometers. The project started on March 26, with an average daily advance rate of 15 meters.

During construction, the TBM passed through the area around the Manzanares River and the M-30 ring road.

The breakthrough ceremony was attended by Jorge Rodrigo, Regional Minister of Housing, Transport and Infrastructure of the Community of Madrid, along with regional government representatives and representatives of the joint venture. Acciona was represented by José Díaz-Caneja, CEO of the Infrastructure division.

The joint venture contract also includes the construction of a 6.6-kilometer underground metro extension, as well as the construction of stations at Comillas, Madrid Río, Palos de la Frontera, Atocha, and Conde de Casal, with the first two being new stations. Additionally, the project includes the installation of seven emergency exits, five ventilation shafts, and slab track.

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